|
1.
19 + 0 =
2
19
|
2.
13 – 5 =
8
1
|
3.
17 + 3 =
2
20
|
4.
6 + 2 =
8
1
|
|
5.
4 + 2 =
1
6
|
6.
1 – 0 =
2
1
|
7.
3 – 2 =
1
2
|
8.
6 – 5 =
2
1
|
|
9.
11 + 4 =
15
1
|
10.
20 – 11 =
9
1
|
11.
9 + 9 =
2
18
|
12.
19 + 0 =
19
2
|
|
13.
15 + 1 =
2
16
|
14.
16 – 16 =
2
0
|
15.
4 – 4 =
2
0
|
16.
12 + 3 =
15
1
|
|
17.
20 + 0 =
2
20
|
18.
16 – 6 =
10
1
|
19.
19 + 0 =
2
19
|
20.
4 – 4 =
0
2
|
|
1.
19 + 0 =
2
19
|
2.
13 – 5 =
8
1
|
3.
17 + 3 =
2
20
|
4.
6 + 2 =
8
1
|
|
5.
4 + 2 =
1
6
|
6.
1 – 0 =
2
1
|
7.
3 – 2 =
1
2
|
8.
6 – 5 =
2
1
|
|
9.
11 + 4 =
15
1
|
10.
20 – 11 =
9
1
|
11.
9 + 9 =
2
18
|
12.
19 + 0 =
19
2
|
|
13.
15 + 1 =
2
16
|
14.
16 – 16 =
2
0
|
15.
4 – 4 =
2
0
|
16.
12 + 3 =
15
1
|
|
17.
20 + 0 =
2
20
|
18.
16 – 6 =
10
1
|
19.
19 + 0 =
2
19
|
20.
4 – 4 =
0
2
|